​​SOUTHLAKE - TD Ameritrade, which received $1.5 million in local and state grants for an $11.2 million expansion of its facilities at Alliance in north Fort Worth, plans to build a new regional office and move to Southlake.

The investment brokerage company, which has operated in two buildings at 4600 Alliance Gateway Fwy. is expected to close a contract by the end of October to buy 78 acres near the Solana Business Park along Texas 114.

The Fort Worth offices, which now employs about 1,200 people, represent the second-largest employment center for TD Ameritrade. The two buildings, which total 140,000 sf, house the company’s call center and institutional business operations.

Those will be consolidated into the new building.

Kim Hillyer, a spokeswoman for TD Ameritrade, said there is no timetable on the project.